IMatrix INodeLight::GetProjectionMatrix(int i)
{
IMatrix invRot;
//Spot
/*invRot = GetRotationMatrix4x4();
invRot.Inv(invRot);*/
//Omni
if (i==0)
{
invRot.MakeIdentity();
invRot=AngleYToMatrix4x4(0);
}else if (i==1)
{
invRot=AngleYToMatrix4x4(I_PIE);
}else if (i==2)
{
invRot=AngleYToMatrix4x4(I_PIE/2.0);
}else if (i==3)
{
invRot=AngleYToMatrix4x4(-I_PIE/2.0);
}else if (i==4)
{
invRot=AngleXToMatrix4x4(I_PIE/2.0);
}else if (i==5)
{
invRot=AngleXToMatrix4x4(-I_PIE/2.0);
}
IMatrix mat = GetPerspectiveMatrix(90,1,m_fRadius,0.01)*invRot*TranslationToMatrix(-GetPosition());
return mat;
}
/* gluLookAt. The result is pre-multiplied to the matrix (M = L * M) instead of
* post-multiplied. */
void RageDisplay::LoadLookAt(float fov, const RageVector3 &Eye, const RageVector3 &At, const RageVector3 &Up)
{
float aspect = GetVideoModeParams().fDisplayAspectRatio;
g_ProjectionStack.LoadMatrix( GetPerspectiveMatrix(fov, aspect, 1, 1000) );
/* Flip the Y coordinate, so positive numbers go down. */
g_ProjectionStack.Scale(1, -1, 1);
g_ViewStack.LoadMatrix(RageLookAt(Eye.x, Eye.y, Eye.z, At.x, At.y, At.z, Up.x, Up.y, Up.z));
}
